TL for a pair of 8's..... ?

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10-21-2009, 01:45 PM

#31

Soundigital

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Join Date: Mar 2008

Posts: 809

Quote:

Originally Posted by kevmurray

Oh sorry I missed that

. I like the 1/4 lambda tuning because it controls driver excursion at resonance and therefore distortion. As far as Sd area goes I find larger cross sections better for these longer lines. I also prefer offset driver to control ripple and if I'm using the line for a wideband application I almost always use a mass loaded type (ported). It controls the ripple better for a smooth response and easy transition to the midrange. Have you built many transmission lines?

hum, interesting.

and tube filling on that case?

Just a couple, only for the experience. 1/4lambda gave me strong peaks in 2x Fs but I never worked on them to reduce the peak

10-21-2009, 06:08 PM

#32

kevmurray

500 Watt CAFz'r

Join Date: Jan 2008

Posts: 537

Quote:

Originally Posted by muriloalvares

hum, interesting.

and tube filling on that case?

Just a couple, only for the experience. 1/4lambda gave me strong peaks in 2x Fs but I never worked on them to reduce the peak

Lots of fill is bad for efficiency. People use to think that it only affected higher frequencies but this is false. I try to fix all ripple and peaks with tube design before adding any damping. Line dimensions and offsets will usually get you 80% clean, then you can fix the rest with fill. With software it's easy